Fireproof window construction.



W. SCHMIDT.

FIREPROOF WINDOW CONSTRUCTION.

APPLICATION FILED JAN. 22; 1910.

} Patented Aug. 2, 1910.

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WILLIAM SCHMIDT, OF CINCINNATI, OHIO, ASSIGNOR TO THE LUNKEN STEELWINDOW (30., OF CINCINNATI, OHIO.

FIREIROOF WINDOW CONSTRUCTION.

To all whom it may concern:

Be'it known that I, WILLIAM SoHMm'r, a citizen of the United States,residing at Cincinnati, Ohio, have invented certain new and usefulImprovements in Fireproof Window Construction, of which the following isa specification.

My present invention relates to improvements in fire-proof windowconstruction and has for its object to provide a simple, economical, andefficient means for supporting the sash counterbalancing devices, whichmeans will be easily removable and interchangeable.

The invention includes the novel features of construction hereinafterdescribed and particularly pointed out in the appended claims.

An embodiment of the invention is illustrated in the accompanyingdrawing, in which Figure 1 is a sectional view of a corner of a windowframe showing my invention applied thereto. Fig. 2 is a sectionalperspective View. Fig. 3 is a bottom plan view showing a modification,and Fig. 4 is a similar view illustrating a further modification. Fig. 5is a perspective view of one form of hanger. Fig. 6 is a view of anotherform of hanger.

Referring by reference characters to this drawing, the numeral 7designates the corner of a metallic window frame or casing such, forexample as described in Letters Patent of the United States #871127dated Nov. 19, 1907. I have found that it is desirable to use inconnection with such metallic windows different methods ofcounterbalancing the sash in some instances using weights for thispurpose as disclosed in said patent, and in others using a constructionin which the sashes counterbalance each other as shown and described inLetters Patent of the United States 957 ,693 dated May 10th 1910. Inorder that the frame or casing may be provided at will with either typeof sup porting device, I carry the part which supports the pulley orpulleys on a plate 8 which is designed to have its side edges in sertedbetween lugs or projections 9, struck from the walls of the frame orcasing, and the top wall of the frame. These lugs are preferably formedby striking or bending in tongues which are integral with the casing.The opposite end or edge of the plate Specification of Letters Patent.

Application filed January 22, 1910. Serial No. 539,598.

Patented Aug. 2, 1910.

8- is supported by a strip 10 of angle iron which is riveted to the topwall of the frame and which provides a space or channel into which theedge of the plate may be inserted and held by a set screw 11. The plateis of such length that it may be first inserted over the lugs and movedfar enough toward the outside wall of the frame to cause its free edgeto clear the angle iron 10, after which it is raised and brought to restin the recess formed by said iron.

Instead of providing but two lugs or indents 9, as shown in Fig. 2, Imay provide four of these as shown in Fig. 3 and dispense with the anglebracket 10, using a set screw 11 to hold the plate against longitudinalmovement.

The plate carries one or more depending brackets 12 which are designedto support the pulleys for the flexible elements which serve to balancethe sashes. The bracket shown in Fig. 5 is designed to support a shaftcarrying sprocket wheels over which pass sprocket chains as disclosed insaid Letters Patent of the United States 957 ,693, the bracketcomprising a plain depending web having an open recess 13 provided witha broadened and curved bearing face or journal 1 1. Instead of strikingout the metal of the frame or casing to form integral lugs 9 I may rivetstrips of angle iron at the sides as indicated at 9 to form grooves orchannels into which the edges of the plate may be slid as indicated inFig. 1 passing a set screw 11 directly through the plate and into themetal of the window frame to secure it against longitudinal movement.

I/Vhen it is desired to use sash cords and weights as the sash balancingmeans I substitute for the plate shown in Fig. 5 a plate such as shownin Fig. 6 having a plurality of pairs of depending webs 12 with openingsor recesses in which are journaled the hubs of the sash cord guides orpulleys.

Instead of forming the brackets as an in tegral part of the plate I maymake the plate 8 as a composite plate, consisting of two superimposedplates, and form the bracket with a head clamped between these twoplates and the vertical web or webs depending through a slot or slots inthe lower plate. Such a construction is shown in Fig. 6 in which eachpair of webs 12 is connected by a head 1E2 clamped between the plates,

in said recesses with means for looking it in place, substantially asdescribed.

3. A supporting device for sash balancing devices comprising a pair ofplates secured one upon the other and a bracket having a head clampedbetween said plates and a web depending through a slot in the lowerplate, substantially as described.

In testimony whereof, I aflix my signature in presence of two witnesses.

WILLIAM SCHMIDT.

WVitnesses:

LANE THOMPSON, HOWARD J. EVANS.

